Over the weekend, Starbucks CEO Howard Schultz spoke to the NY Times about being fed up with partisan politics in Washinton, D.C., and how big business needed to stop feeding the beast with campaign contributions. On Monday, he reached out to a handful of other top execs to join him in his boycott.

A year ago, the Supreme Court ruled that corporations could not be banned from political spending during elections through either independent expenditures from corporations’ general funds or “electioneering communications,” i.e. political ads. Detractors cried out that it would let loose a flood of corporate cash into elections, and they were right. A new Public Citizen report shows that outside groups quadrupled their contributions during the last mid-term election from the previous, and we will never know exactly where a good deal of the money came from.